An upward force of 18 N is applied via a string to lift a ball with a mass of 1.5 kg.

a) what is the net force acting upon the ball?

b) what is the acceleration of the ball?

Which of the following is a correct interpretation of the expression

Question 8 Unsaved Which of the following is true about magnetic poles? Question 8 options: Like poles repel each other, and opposite poles attract each other. Opposite poles repel each other. Like poles attract each other.

Predict which will fall to the ground faster a crumpled paper or flat sheet of paper

Mechanical (sound) waves to Earth from satellites. How is this possible? aves are unable to travel through a vacuum, such as through space, but radio waves are transmitted

Because fermentation takes place in the absence of oxygen, it is said to be a. aerobic b. anaerobic c. cyclic d. essential to oxygen production

An object has an acceleration of 24 m/s/s. How long would it take the stationary object to reach a velocity of 6.8 m/s?

What is normal distribution in statistics?

Which of the following water samples would be considered acidic

A linearly-polarized electromagnetic (EM) wave has an electric field with amplitude 1000 V/m. You hold a a linear polarizer in front of it and rotate the polarizer so that all of the EM wave is blocked. You then rotate the polarizer 30 degree.

Let y'=4 x. find all values of r such that y = rx^{2} satisfies the differential equation. if there is more than one correct answer, enter your answers as a comma separated list.